Mr C Harrison in speedboat Non Sequitor X breaks World Outboard Boat Speed Record.
Full title reads: "Cowes. All speed records ours ... now! Mr C Harrison on Mr J W Shillan's Non Sequitor X - wins World's Outboard Boat Speed Record (55.33 MPH) for Britain."
Cowes, Isle of Wight.
Small speedboat 'Non-Sequitor X' speeds across water in dock area. The one man motorboat with an outboard engine picks up a fair bit of speed. The boat makes several runs past the camera.
Mr Harrison comes up onto the dockside and is congratulated by a timekeeper who gives him the times of his two runs and tells him he has broken a World Record.
N.B. possible alternative spellings Non-Sequitur / Non Sequitur.